You can use TurboTax Self-Employed (online) or TurboTax Home & Business (desktop) to file your single member LLC.
To get started take the steps below.
1) Sign into TurboTax Online
2) Continue your return by click Taxes > Tax Timeline > Take me to my return.
3) Click on the Federal Taxes tab (Personal depending on version)
4) Click on Wages & Income sub-tab (Personal Income depending on version)
5) Click Jump to full list or Show all income (if needed)
6) Scroll down to Self-Employment click on Show more.
7) Click Start/Revisit next to Income and Expenses.
You may also find the following answer from TurboTaxAmyT's helpful. https://ttlc.intuit.com/replies/5910584
